SFF-8643 Mini SAS HD host port to U. 2 SFF-8639 target for 2.5" NVMe SSD connection; Built-in 15Pin SATA power connector to supply stable power for U. 2 drives; SAS 3.0 12Gbps high bandwidth, fully compatible with PCIe 3.0 / 4.0 x4 NVMe transmission; Compact 50cm short length for neat, space-saving internal server chassis routing; Multi-layer shielding eliminates EMI interference for stable 24/7 heavy workload operation